Edit, after the fact:
Okay, so, I didn't get her. Actually, I didn't even get Arisa. Am I mad? Nah, not really. I got Rockin' Nurse Tomoe (A Power 4Star THANK YOU RNG) and some nice 3Stars, and at least I got Kasu. I hope y'all had better luck than I.
Edit 2: An update: https://bandori.party/activity/10126/So-Regarding-the-post-I-did-earlier-about-Saaya-and-Arisa-not-coming-home-I-did-another//#disqus_thread